Shijiazhuang Laiye Import& Export Trading Co., Ltd. is one of the leading manufacturers and suppliers of cbt-f4 high pressure hydraulic gear pump for construction machinery in China, also supports customized service. If you're going to wholesale high quality cbt-f4 high pressure hydraulic gear pump for construction machinery made in China, welcome to get pricelist from our factory.
Products Description
The Definition
The CBT-F4 high pressure hydraulic gear pump for construction machinery is a mid-range, high-performance single gear pump designed to deliver consistent, pressurized hydraulic fluid for mobile and industrial equipment. It serves as a reliable power source for hydraulic cylinders and motors, combining lightweight aluminum construction with robust internal engineering to handle pressures up to 25 MPa.
Principle
Operating on the positive displacement principle, the CBT-F4 utilizes two precision-meshing gears housed within an aluminum body. As the gears rotate, fluid is drawn into the pump cavity under a localized vacuum, transported between the gear teeth and the housing, and discharged under high pressure as the teeth re-mesh, ensuring continuous and stable flow output.
Core Structural Design
High-Strength Aluminum Alloy Housing: Provides an optimal balance between weight reduction and high-pressure containment, while effectively dissipating heat generated during operation.
Axial Clearance Floating Compensation: This automatic compensation mechanism adjusts the end clearance between the gears and the plates. It ensures minimal internal leakage and maintains high volumetric efficiency throughout the pump's lifecycle.
Radial Balance Design: This structural feature reduces the stress placed on the bearings caused by high-pressure fluid, extending bearing life and preventing premature failure.
Features & Advantages
Dynamic Efficiency Retention: The axial clearance floating compensation mechanism is not static; it actively responds to internal pressure changes. This means that as the pump ages and components experience natural wear, the mechanism automatically adjusts to maintain a tight seal. Consequently, the CBT-F4 sustains its 92%-93% volumetric efficiency over a longer service period compared to fixed-clearance pumps, translating to consistent machine performance over years of use.
Dual-Phase Efficiency Optimization: The CBT-F4 high pressure hydraulic gear pump for construction machinery features a split-efficiency design. Models with lower displacement (10-16 mL/r) achieve a 92% rate ideal for precision control loops. Models with larger displacement (19.2-32 mL/r) utilize refined internal tolerances to deliver an even higher 93% efficiency. This tiered approach allows engineers to maximize system energy savings based on specific flow volume requirements.
Unified Power Platform with Safety Margin: By standardizing the entire series at a 20 MPa rated / 25 MPa peak pressure, the CBT-F4 eliminates pressure concerns during model selection. A 25 MPa peak rating is a deliberate engineering choice providing a robust safety buffer against sudden hydraulic shocks, minimizing the risk of burst or seizure during unexpected overloads-a critical reliability factor in earthmoving equipment.
Global Coupling Compatibility (5-in-1 Shaft Design): To solve the engineering headache of coupling mismatches, the CBT-F4 offers five distinct shaft end options: Plain Key, Rectangular Spline, Screw Thread, Involute Spline, and SAE Spline. This design flexibility simplifies parts sourcing, allowing OEMs to use the same pump housing across different engine brands (e.g., Cummins, Kubota, Deutz) by simply changing the shaft machining type.
Specifications
Performance Parameters Table
| Model | Displacement (mL/r) | Rated Pressure (MPa) | Max Pressure (MPa) | Rated Speed (r/min) | Max Speed (r/min) | Volumetric Efficiency | Weight (Kg) |
|---|---|---|---|---|---|---|---|
| CBT-F410 | 10 | 20 | 25 | 2500 | 3000 | 92% | 3.1 |
| CBT-F412.5 | 12.5 | 20 | 25 | 2500 | 3000 | 92% | 3.2 |
| CBT-F414 | 14 | 20 | 25 | 2500 | 3000 | 92% | 3.3 |
| CBT-F416 | 16 | 20 | 25 | 2500 | 3000 | 92% | 3.4 |
| CBT-F419.2 | 19.2 | 20 | 25 | 2500 | 3000 | 93% | 3.5 |
| CBT-F420 | 20 | 20 | 25 | 2500 | 3000 | 93% | 3.5 |
| CBT-F423 | 23 | 20 | 25 | 2500 | 3000 | 93% | 3.6 |
| CBT-F425 | 25 | 20 | 25 | 2500 | 3000 | 93% | 3.7 |
| CBT-F426.5 | 26.5 | 20 | 25 | 2500 | 3000 | 93% | 3.7 |
| CBT-F430 | 30 | 20 | 25 | 2500 | 3000 | 93% | 3.9 |
| CBT-F432 | 32 | 20 | 25 | 2500 | 3000 | 93% | 4.0 |
Application
The CBT-F4 series is specifically designed for mid-range construction equipment, agricultural implements, and industrial systems that require a balance of flow, pressure, and versatile shaft compatibility.
Target Industries:
Construction Machinery: Mid-sized excavators, 3-8 ton wheel loaders, and skid steer loaders.
Agricultural Equipment: Mid-size tractors, combine harvesters, and crop sprayers.
Industrial Systems: Power units for presses, shears, and small material handling cranes.
Installation & Maintenance
Installation Guidelines:
Shaft & Coupling Selection: It is critical to choose a flexible coupling that precisely matches the selected shaft type (Plain, Spline, or SAE). Misalignment is the primary cause of seal and bearing failure.
Port Connections:
For Threaded Ports: Select the correct fittings based on your model size (M22x1.5 / M18x1.5 for 10-16 mL/r; or M33x2 / M27x2 for 19.2-32 mL/r). Apply sealant correctly to ensure a leak-tight connection.
For Flange Ports: Ensure alignment with the specific mounting hole patterns (47.6x22.2 mm or 52.4x26.2 mm) and use the correct O-ring gaskets.
Mounting: Torque the four mounting bolts evenly. Avoid over-tightening, which could distort the aluminum body.
Maintenance:
Oil Cleanliness: To maintain the 92%-93% efficiency, strictly maintain oil filtration to ≤ 25 μm. Inspect and replace return filters regularly.
Temperature: Ensure the system keeps the operating oil below 80°C. Overheating will degrade the oil and may damage the floating compensation mechanism.
Service Support: A standard 12-month warranty applies.
Why Choose Us
Decades of Hydraulic Specialization
Since 1988, our engineering team has dedicated over 35 years solely to the hydraulic pump and valve sector. Unlike general machining factories, our production processes and quality control criteria are specifically tailored to meet the rigorous demands of fluid power systems. This singular focus means we intimately understand the failure points of gear pumps-such as bushing wear and cavitation-and have refined our manufacturing to prevent them.
Integrated Production Capabilities
We operate a vertically integrated facility with over 200 technicians, encompassing CNC machining, gear hobbing, automated assembly, and a dedicated hydraulic testing lab. This integration allows us to control the quality of every cast aluminum housing and cut gear tooth from the raw material stage to the final packaged product, ensuring that what we quote is exactly what we deliver.
Industry-Standard Quality Control
To ensure our pumps withstand the pressure, we enforce a three-tier pre-shipment quality control:
1. Metallurgical Check: Incoming aluminum and steel alloy batches are tested for hardness and chemical composition to reject substandard raw materials.
2. Dimensional Verification: Critical dimensions, specifically the gear chamber bore and mounting hole patterns, are verified at 3-station process checks.
3. Dynamic Performance Test: Every single CBT-F4 pump is run on a hydraulic test bench. We validate the volumetric efficiency, detect any internal leakage, and ensure zero external seal leaks at 25 MPa peak pressure before the pump leaves the factory.
FAQ
Q: What are the critical parameters for choosing the right CBT-F4 model?
A: Model selection relies on three interconnected factors: Displacement (flow), Pressure (force), and Shaft Type (connection).
1. Displacement: The desired hydraulic cylinder speed determines the displacement (10-32 mL/r). Higher displacements provide faster actuator movement.
2. Pressure: The CBT-F4 series maintains a uniform 20 MPa Rated / 25 MPa Max pressure across all models. You can choose a smaller displacement without sacrificing available force.
3. Shaft: Finally, select the correct shaft (Plain, Spline, or SAE) to match your engine's coupling.
Q: What is the weight difference across the series, and why does it matter?
A: The weight varies from 3.1 Kg to 4.0 Kg, increasing proportionally with the displacement and correspondingly longer pump body (from 116 mm to 141 mm). While these differences are relatively small, when considering machine stability and center of gravity-especially in compact loaders or skid steers-opting for the lighter CBT-F410 to CBT-F420 models (under 3.5 Kg) can help maintain better machine balance.
Q: How does this pump handle extreme conditions, such as sudden load spikes?
A: The CBT-F4 series is engineered with a robust radial balance structure. When a machine (like an excavator) hits a rock and experiences a sudden, severe pressure spike, this structure redistributes the side-load forces away from the pump's bearings. Combined with the 25 MPa max pressure rating, this design buffer provides a crucial safety margin, preventing the pump from seizing or cracking under extreme shock loads.
Q: What is the recommended shipping packaging to ensure the pump arrives undamaged?
A: We prioritize safe transit. Each pump is individually wrapped in protective film and packed in a sturdy, export-grade plywood crate or heavy-duty carton (depending on order quantity). Our packaging complies with ISPM 15 standards, ensuring it is safe for customs clearance and sea/air freight to all international destinations.
Q: Can I get the pump without painting, or with a specific custom paint color?
A: Yes, we support OEM customization. The standard surface treatment is a clear anodized finish or a protective spray coating. However, we can supply the pumps with a specific paint color, or unpainted, based on your detailed requirements and purchase order.
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